640741248

素因数分解:

$2^7\times 3^2\times 7^2\times {\mathrm{11351}}^1$

素因数の和:11385

約数の個数: 144

約数和(自身を含む): 2145017160

約数和(自身を除く): 1504275912

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 49, 56, 63, 64, 72, 84, 96, 98, 112, 126, 128, 144, 147, 168, 192, 196, 224, 252, 288, 294, 336, 384, 392, 441, 448, 504, 576, 588, 672, 784, 882, 896, 1008, 1152, 1176, 1344, 1568, 1764, 2016, 2352, 2688, 3136, 3528, 4032, 4704, 6272, 7056, 8064, 9408, 11351, 14112, 18816, 22702, 28224, 34053, 45404, 56448, 68106, 79457, 90808, 102159, 136212, 158914, 181616, 204318, 238371, 272424, 317828, 363232, 408636, 476742, 544848, 556199, 635656, 715113, 726464, 817272, 953484, 1089696, 1112398, 1271312, 1430226, 1452928, 1634544, 1668597, 1906968, 2179392, 2224796, 2542624, 2860452, 3269088, 3337194, 3813936, 4358784, 4449592, 5005791, 5085248, 5720904, 6538176, 6674388, 7627872, 8899184, 10011582, 10170496, 11441808, 13076352, 13348776, 15255744, 17798368, 20023164, 22883616, 26697552, 30511488, 35596736, 40046328, 45767232, 53395104, 71193472, 80092656, 91534464, 106790208, 160185312, 213580416, 320370624, 640741248]

約数ペア:

[(1, 640741248), (2, 320370624), (3, 213580416), (4, 160185312), (6, 106790208), (7, 91534464), (8, 80092656), (9, 71193472), (12, 53395104), (14, 45767232), (16, 40046328), (18, 35596736), (21, 30511488), (24, 26697552), (28, 22883616), (32, 20023164), (36, 17798368), (42, 15255744), (48, 13348776), (49, 13076352), (56, 11441808), (63, 10170496), (64, 10011582), (72, 8899184), (84, 7627872), (96, 6674388), (98, 6538176), (112, 5720904), (126, 5085248), (128, 5005791), (144, 4449592), (147, 4358784), (168, 3813936), (192, 3337194), (196, 3269088), (224, 2860452), (252, 2542624), (288, 2224796), (294, 2179392), (336, 1906968), (384, 1668597), (392, 1634544), (441, 1452928), (448, 1430226), (504, 1271312), (576, 1112398), (588, 1089696), (672, 953484), (784, 817272), (882, 726464), (896, 715113), (1008, 635656), (1152, 556199), (1176, 544848), (1344, 476742), (1568, 408636), (1764, 363232), (2016, 317828), (2352, 272424), (2688, 238371), (3136, 204318), (3528, 181616), (4032, 158914), (4704, 136212), (6272, 102159), (7056, 90808), (8064, 79457), (9408, 68106), (11351, 56448), (14112, 45404), (18816, 34053), (22702, 28224)]